Most databases allow you to directly export your search results into your EndNote Library (see Export Directly from Online Databases).
A few databases require you to save your database search results as a text (.txt) file, and then to import that file into EndNote using filters.
EndNote comes with a range of filters. You may download specific filters using the link below:
To download a filter:
This will save it in the appropriate directory on your computer. Usually this will be Documents >EndNote > Filters.
Make sure the EndNote folder locations match where you are saving the filters. In EndNote select EndNote 21> Settings...> Endnote Preferences > Folder Locations > Filters Folder.
Once you have saved your text file from a database, you will then need to import that text file into your EndNote Library:
P.S. If you cannot see the Import Options, click the button Show Options at the bottom left corner